This is the 3735th most frequent Japanese word.
さし
The Japanese word "さし" can have various meanings depending on the context, such as "insert," "between," "suffix for measuring tools," or "chopsticks," among others.
In this sentence, '差し入れ' (sashiire) refers to an offering or a gift, typically given out of consideration or kindness.
この花瓶は友達からの差し入れです。
This vase is a gift from a friend.
In this instance, 'さしている' embodies the concept of pointing out or suggesting a feeling or message through something.
その絵には母への感謝の気持ちがよくさしています。
That picture clearly conveys feelings of gratitude toward my mother.
Here, 'さし挟む' (sashi hasamu) is used to describe the action of interjecting or inserting something, often figuratively in a conversation.