11B

Etymology
From the 11 basic information recorded on the identity card.

Noun

 * 1)  A national serviceman's identity card, as opposed to the civilian identity card.
 * 2) boron-11. The "11" should be superscript: $11$B.
 * 1) boron-11. The "11" should be superscript: ⇭⇭⇭B.
 * 1) boron-11. The "11" should be superscript: ⇭⇭⇭B.
 * 1) boron-11. The "11" should be superscript: ⇭⇭⇭B.